Roses of the four seasons are rose plants. They are sunny, cold-resistant, drought-tolerant, and resistant to soil. They do not require strict soil requirements. If the conditions are suitable for growth, the average annual growth of about 40 cm, up to 80 cm or more.

Reproduction

The breeding of the four seasons rose can be divided into propagation and cutting propagation. The cutting propagation is divided into hardwood cuttings and tender cuttings. The propagation of branches can be carried out before the budding in April each year or after the falling leaves in autumn. This article only introduces tender cuttings.

Nursery choice. Select leeward sunny, easy irrigation and drainage, sandy loam soil loose. The seedbed is made 100 cm wide, 25 cm high, and the width of the trail is 50 cm. The gravel and coarse sand are laid down at 10 cm. The loam and fine sand on the top of the screed are sieved so that the soil is finely crushed, the bed surface is smooth, and the channel is smooth. In the nursery bed, a 50-cm-high plastic film shed is placed on the bed, and the shelter is covered by a 180-cm-high shaded shed.

The selection and collection of the ear. After the first batch of flowering, the residual flowers were removed. After 3 days to 5 days, the shoots with robust leaves and no pests and diseases were selected. After the branches were cut, the upper branches were cut and at least 3 axillary buds were cut. The length was about 10 About the centimeters of cuttings as cuttings, and then only to leave the end of the two compound leaf near the petiole of 1 ~ 2 leaflets, the lower part of the compound leaf with the petiole removed to reduce water transpiration. In the lower part of the cuttings, one axillary bud is located on the opposite side of the axillary bud, about 1 cm away. Cut the beveled surface with a sharp and clean knife, and cut the mouth smooth to facilitate the formation of healing tissue. The cuttings should be processed with the cuttings, if not immediately, the cuttings should be moistened with water.

Cutting method. Cuttings are cut into coarsely divided grades. Plant spacing 5 cm, spacing 10 cm. First, use a wooden stick equal to the thickness of cuttings to make a hole in the insertion bed, insert two-thirds of the lower part of the cutting into the hole, compact the soil around the cutting, and use the carbendazim solution that is diluted 10,000 times to soak the insertion bed. To disinfection effect). Then, a plastic shed and a shade shed were affixed, and a temperature and humidity table was put in the shed to measure the temperature and humidity in the shed. A ground temperature gauge was placed on the surface to measure the ground temperature.

Management of cutting seedlings. Put 1 layer of water after cutting, to keep warm and moisturize. Plastic sheds should be sealed. In addition to the need to water the soil, it is generally not necessary to open them. It is only necessary to open the air for ventilation. Watering 2 or 3 times a day for the first 3 days after cutting, reducing the amount of water after 1 week to avoid rot. The relatively high relative humidity in the shed is generally maintained at 80% to 90%, which means that the water droplets should always be maintained on the plastic film.

The best time for the four seasons rose cuttings is from July 15th to the 25th (in the north); the south is about mid-September, the temperature is 25°C to 35°C, and the relative humidity is above 90%. At this time, the survival rate of the cuttings is the highest, and the seedlings can grow 15 cm to 18 cm.

management

Branches. The roots of the roses of the four seasons have strong sprouting ability, and the more the ramets grow, the more vigorous they grow. If the ramets do not spread the nutrients and affect their normal development, they cause little or no flowering. The common ramets should be carried out before the spring plants are not germinated or after the autumn defoliation. This feature can also be used as a breeding method for the rose of the four seasons.

prune. Pruning is usually performed during the dormant period of winter leaves. Keep a third of the strong branches, remove the old branches, dead branches, diseased branches and weak branches, to promote the emergence of new branches at the base. The rose buds of the four seasons are all born on the top of the branches. Therefore, they should only be cut thinly and should not be short cut.

Watering. Roses of the four seasons are shallow rooted species. During the rainy season, attention should be paid to waterlogging and flood prevention. Water should be poured every 5 days or so in the summer. Before and after the flowering period, water should be poured once, and watering should be done at ordinary times.

Fertilization. Each year before the spring budding, a decomposing farmyard manure is applied, and every 15 days to 20 days after germination, construction of a rare decomposing manure manure is performed. The secondary calcium superphosphate or ammonium dihydrogen phosphate aqueous solution can be used for the construction of buds. Stop using nitrogen fertilizer during flowering to prevent flowering. After winter, dig a hole around the plant, apply fertilizer to the farmhouse, and water the soil after covering the soil.

Removal. Residues of residual flowers and cones must be removed in time. Plants that frequently remove residual fruits should have higher flowering times than those that do not remove residual fruits.

illumination. Roses in the four seasons are full of sunshine and dry conditions. Avoid planting under the white wall to avoid sunburn reflected burns the leaves.

Pest Control. Common pests include aphids, red spiders, and whitefly. It can be sprayed with 1500-2000 times of 2.5% gram of EC at the time of pest occurrence, once every 10 days, and continuously used 3 times-4 times. Whitefly can be sprayed with 35% to 4 times of 25% fluocinol EC 1000-2000 times or 2.5% Uranus EC 3000 times. The main diseases were powdery mildew and black spot. After the onset of the disease, the diseased leaves were immediately removed and the diseased branches were removed. The 75% chlorothalonil wettable powder was sprayed at 600-700 times in time, and 50% thiophanate-methyl was also used. The wettable powder was sprayed 600 to 700 times or 70% 500 to 700 times.

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